Hi,
i have a list of these properties.
public DateTime Workday {get;set;}
public DateTime StartWorkAt {get;set;}
public DateTime EndWorkAt {get;set;}
public TimeSpan Duration {
get {return EndWorkAt - StartWorkAt;}
}
The List is grouped by Workday. What i like to do is to display and sum 'Duration' but no success.........
How can i do these.
Thanks
Peter